Acquired From

Found inShrine of Amanabetween the second and third bonfire. In a chest down a long, treacherous path past the cyclops/ogre and guarded by two Sorceresses. Hidden in the water in an iron chest at the very end of the path, right after an estus flask shard.

Notes

Buffs weapon with lightning damage. Lasts roughly 90 seconds. Best used for buffing lightning-infused weapons. Does not scale off catalyst's lightning attack stat.

So far the best weapon buff spell in game. Lightning only scales with Faith so no need to invest in INT like Dark Weapon. And there is seldom anyone resists lightning unlike Fire which a lot of enemies resist it. Fire weapon is good, but not so versatile compares to lightning especially when you have to go into NG+ to get the spell. A lightning infused weapon with sunlight blade has more DPS than sacred oath